var ajax = {

	XMLHttpRequest: function() {
  		try { return new XMLHttpRequest(); }
 		catch (e) { try { return new ActiveXObject('Msxml2.XMLHTTP'); }
  		catch (e) { try { return new ActiveXObject('Microsoft.XMLHTTP'); }
  		catch (e) { return false; }}}
  		return false;
	},
	

	AbrirHTTP: function(url, campoid){
		return this.CargarHTTP(url, campoid);
	},
	

	CargarHTTP: function(url, campoid){

		var oRequest = this.XMLHttpRequest();
		if (!oRequest) return true;
		
		oRequest.open('GET', url, true);
		oRequest.setRequestHeader('Referer',window.location);

		oRequest.onreadystatechange = function() {
	     	if (oRequest.readyState == 4 && oRequest.status == 200) {
	     		//alert(oRequest.responseText);
	     		document.getElementById(campoid).innerHTML = oRequest.responseText;
			}
		};
      	      
      		oRequest.send(null);
		return false;
	}
	
};